CN205089284U - Water injection string bottom sand setting single current valve - Google Patents
Water injection string bottom sand setting single current valve Download PDFInfo
- Publication number
- CN205089284U CN205089284U CN201520917681.8U CN201520917681U CN205089284U CN 205089284 U CN205089284 U CN 205089284U CN 201520917681 U CN201520917681 U CN 201520917681U CN 205089284 U CN205089284 U CN 205089284U
- Authority
- CN
- China
- Prior art keywords
- pipe
- flow path
- path structure
- valve
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Check Valves (AREA)
Abstract
The utility model provides a water injection string bottom sand setting single current valve, which comprises a sleeve, the single current valves, the runner connects, the angular form pipe, the sand setting tail pipe, the connection is in water injection string's bottom, through crescent passageway down during sand setting in the water injection string on it whereabouts, it sinks to in the sand setting tail pipe to go up the crescent passageway, can not pile up on the single current valves, the axis of angular form pipe and the axis disalignment of runner joint, the diaxon line is at a distance of 4 -19m, it connects inside one side to make the angular form pipe be in the runner, make crescent passageway down, runner when upward the crescent passageway is in position placed in the middle than the angular form pipe is concentrated, do not block the grit, submerged grit can sink to in the sand setting tail pipe of lower part in smooth and easy passing through, guarantee that the single current valve is not buried by sand, during the backwash well, the valve ball can be washed open by the well -flushing water, the utility model discloses can smooth well -flushing, guarantee that the water injection well can long -term normal water injection, apparent economic benefits has.
Description
Technical field
The utility model is the instrument of separated-zone water infection oil field well, is sand-sink check valve bottom a kind of water injection string.
Background technology
In order to allow water injection well play larger effect, oil field is taked to penetrate out multiple layers of position to water injection well and is carried out seperated layer water injection, makes a bite water injection well can to multiple layers of position water filling.Because the water injection pressure of each water filling layer position is different with water injection rate, realize multilayer water filling simultaneously, water injection string under needing enter separator and injection well downhole flow regulator, use these kits, need to suppress tubing string, suppressing pressure is 9-24MPa, therefore, separate layer water injection string is airtight tubing string, again in order to ensure energy oppositely well-flushing in the injecting process, so, ball-and-seat is entered under the bottom needs of tubing string, current ball-and-seat does not have sand setting passage, sand grains in water injection string on it is just deposited on ball-and-seat after sinking, ball-and-seat is buried by sand, make its well-flushing channel jam, liquid stream rushes not open the valve ball on it when flowing from bottom to top, causing cannot well-flushing, the long-term normal water filling of water injection well can not be ensured, significant impact is caused to oil field development.In order to address this problem, oilfield technology personnel have studied sand settling type water injection well well-cleaning check valve, its sand setting passage of Yu is two crescent slotted eyes, passage is not concentrated, and flow area is little, has the table top stopping that sand sinks between two crescent slotted eyes, it is obstructed when sand sinks, easy formation sand bridge, sand by sinking in the sand setting tubing string of bottom, does not have the effect that sand control buries.
Summary of the invention
The purpose of this utility model is sand-sink check valve bottom a kind of water injection string of design, solve above-mentioned Problems existing, the sand sunk in its water injection string is made to sink in the sand setting tail pipe of bottom by ball-and-seat smoothly, ensure that ball-and-seat is not buried by sand, energy is well-flushing smoothly, ensures that water injection well can normal water filling for a long time.
The purpose of this utility model is achieved in that and comprises sleeve, ball-and-seat group, flow path structure, dihedral pipe, sand setting tail pipe, flow path structure is hollow structure, have in its side and outreach groove, the inside of dihedral pipe is drilled with circular hole, the upper end of described circular hole outwards leads to, lower end is airtight, the side of dihedral pipe has inline groove, flow path structure is put in the bottom of dihedral pipe, make described interior communication groove relative with described outer communication groove and press close to, after welding on the border, inner side of described outer communication groove, make flow path structure and dihedral pipe integrally welded, and require that weld seam keeps sealing, high-pressure fluid in flow path structure outwards can not be flowed out from commissure, the top of dihedral pipe is connected with the bottom of ball-and-seat group, the top of flow path structure is connected with the bottom of sleeve, sleeve covers ball-and-seat group, ball-and-seat group is used for the current liquid upwards flowed from bottom, and for blocking the liquid from top, tubing round thread is arranged at the top of sleeve, the bottom of flow path structure connects sand setting tail pipe, the bottom lock of sand setting tail pipe, the internal diameter of flow path structure is greater than the external diameter 9-30mm of dihedral pipe, make flow path structure and dihedral pipe integrally welded after, the axis of dihedral pipe and the axis disalignment of flow path structure, two axial lines is at a distance of 4-19m, make to be formed between flow path structure and dihedral pipe one next month thread form passage, a upper crescent passage is formed between ball-and-seat group and sleeve.
Ball-and-seat group comprises: tapered cap, unidirectional valve ball, one-way valve seat, valve bonnet, valve bonnet there is tapered cap, valve bonnet there is linked hole, make UNICOM inside and outside it, unidirectional valve ball is put in the valve pocket of valve bonnet, one-way valve seat is put under the valve pocket of valve bonnet, the upper surface of one-way valve seat is adjacent to the inner circular bead face of valve bonnet, one way valve bulb diameter is greater than the valve port diameter of one-way valve seat, unidirectional valve ball drops to contact surface after on one-way valve seat and keeps sealing, after valve bonnet is connected with dihedral gas thread, the lower surface of one-way valve seat is withstood in the upper surface of dihedral pipe, gap between the outside of one-way valve seat and valve bonnet keeps sealing.
Sand setting tail pipe comprises box cupling, oil pipe, plug, and the top of box cupling is connected to the bottom of flow path structure, and box cupling, oil pipe, plug connect successively, and oil pipe is 1-9 root, and plug inside is blind hole, and plug makes oil pipe inside and external isolation.
Install filter in the outer communication groove of flow path structure side, described filter has filter bores, the diameter of filter bores is: 2-9mm.
Lower seal is installed in the junction of sleeve and flow path structure, and sealing ring is installed in the junction of ball-and-seat group and dihedral pipe.
The beneficial effects of the utility model are: the utility model is connected to the bottom of water injection string, by thread form passage next month when sand setting in water injection string on it falls, upper crescent passage sinks in sand setting tail pipe, can not be deposited in ball-and-seat group, the axis of dihedral pipe and the axis disalignment of flow path structure, two axial lines is at a distance of 4-19m, dihedral pipe is made to be in the side of flow path structure inside, make thread form passage next month, runner when upper crescent passage is in middle position than dihedral pipe is concentrated, sand is not stopped, the sand sunk can smoothly by sinking in the sand setting tail pipe of bottom, ensure that ball-and-seat is not buried by sand, during anti-flushing well, valve ball can be washed open by well-flushing water, the utility model energy well-flushing smoothly, ensure that water injection well can normal water filling for a long time, there is significant economic benefit.
Accompanying drawing explanation
Accompanying drawing 1 is the assembling drawing of the utility model embodiment.
Accompanying drawing 2 is the sectional views after cutting open from A-A in accompanying drawing 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As seen from the figure, embodiment of the present utility model comprises sleeve 1, ball-and-seat group, flow path structure 9, dihedral pipe 10, sand setting tail pipe, flow path structure 9 is hollow structure, have in its side and outreach groove 18, the inside of dihedral pipe 10 is drilled with circular hole 16, the upper end of described circular hole 16 outwards leads to, lower end is airtight, the side of dihedral pipe 10 has inline groove 17, flow path structure 9 is put in the bottom of dihedral pipe 10, make described interior communication groove 17 relative with described outer communication groove 18 and press close to, after welding on the border, inner side of described outer communication groove 18, make flow path structure 9 and dihedral pipe 10 integrally welded, and require that weld seam keeps sealing, high-pressure fluid in flow path structure 9 outwards can not be flowed out from commissure, the top of dihedral pipe 10 is connected with the bottom of ball-and-seat group, the top of flow path structure 9 is connected with the bottom of sleeve 1, sleeve 1 covers ball-and-seat group, ball-and-seat group is used for the current liquid upwards flowed from bottom, and for blocking the liquid from top, tubing round thread is arranged at the top of sleeve 1, the bottom of flow path structure 9 connects sand setting tail pipe, the bottom lock of sand setting tail pipe, the internal diameter of flow path structure 9 is greater than the external diameter 9-30mm of dihedral pipe 10, after making flow path structure 9 and dihedral pipe 10 integrally welded, the axis of dihedral pipe 10 and the axis disalignment of flow path structure 9, two axial lines is at a distance of 4-19m, make to be formed between flow path structure 9 and dihedral pipe 10 one next month thread form passage 11, a upper crescent passage 7 is formed between ball-and-seat group and sleeve 1.
Ball-and-seat group comprises: tapered cap 2, unidirectional valve ball 3, one-way valve seat 5, valve bonnet 6, valve bonnet 6 there is tapered cap 2, the tip of tapered cap 2 is upper, be convenient to sand, prevent sand from piling up, tapered cap 2 and valve bonnet 6 can be integrative-structures, also can be that two pieces is threaded, adopt two pieces to be threaded and can reduce material expense, accompanying drawing is two pieces structure, as adopted integrative-structure to be also in protection domain of the present utility model during enforcement, valve bonnet 6 there is linked hole 4, make UNICOM inside and outside it, for being flowed the liquid come by bottom, unidirectional valve ball 3 is put in the valve pocket of valve bonnet 6, one-way valve seat 5 is put under the valve pocket of valve bonnet 6, the upper surface of one-way valve seat 5 is adjacent to the inner circular bead face of valve bonnet 6, unidirectional valve ball 3 diameter is greater than the valve port diameter of one-way valve seat 5, unidirectional valve ball 3 drops to contact surface after on one-way valve seat 5 and keeps sealing, after valve bonnet 6 is threaded with dihedral pipe 10, the lower surface of one-way valve seat 5 is withstood in the upper surface of dihedral pipe 10, gap between the outside of one-way valve seat 5 and valve bonnet 6 keeps sealing, the sealing ring installed by the junction of the upper surface of one-way valve seat 5 and the inner circular bead face top tight sealing of valve bonnet 6 and ball-and-seat group and dihedral pipe 10 realizes sealing.
Sand setting tail pipe comprises box cupling 12, oil pipe 13, plug 14, the top of box cupling 12 is connected to the bottom of flow path structure 9, box cupling 12, oil pipe 13, plug 14 connect successively, oil pipe 13 is 1-9 root, determined by the sand setting amount of water injection well, plug 14 inside is blind hole, and plug 14 makes oil pipe 13 inside and external isolation.
The outer communication groove 18 li of flow path structure 9 side installs filter 19, and described filter 19 has filter bores, and the diameter of filter bores is: 2-9mm, and when preventing well-flushing, large particle enters in water injection pipe and affects water injection tool work.
Sleeve 1 installs lower seal 8 with the junction of flow path structure 9, because the connecting thread of sleeve 1 and flow path structure 9 is for directly to buckle screw thread, only has end face sealing together, install lower seal 8 additional and form two seals, increase safety, sealing ring 15 is installed in the junction of ball-and-seat group and dihedral pipe 10, and reason is same as described above.
In the bottom of separate layer water injection string under the utility model, separate layer water injection string there are hydraulic packer and injection well downhole flow regulator, hydraulic packer needs to suppress setting, suppress in separate layer water injection string, now unidirectional valve ball 3 is setting on one-way valve seat 5, separate layer water injection string is in air-tight state, can suppress and make hydraulic tool work.During well-flushing, basin well water is squeezed into from the sleeve pipe of water injection well, through filter plate 19 enter back down unidirectional valve ball 3 enter in water injection pipe formed circulation, realize water injection well well-flushing.When making there is sand in water injection string due to water filling or well-flushing, sand sinks under Gravitative Loads, through next month thread form passage 11, upper crescent passage 7 sinks in sand setting tail pipe, proposed when oil pipe is carried in lower subjob to remove.
Claims (5)
1. sand-sink check valve bottom a water injection string, comprise sleeve (1), ball-and-seat group, flow path structure (9), dihedral pipe (10), sand setting tail pipe, it is characterized in that: flow path structure (9) is hollow structure, have in its side and outreach groove (18), the inside of dihedral pipe (10) is drilled with circular hole (16), the upper end of described circular hole (16) outwards leads to, lower end is airtight, the side of dihedral pipe (10) has inline groove (17), flow path structure (9) is put in the bottom of dihedral pipe (10), make described interior communication groove (17) relative with described outer communication groove (18) and press close to, after welding on the border, inner side of described outer communication groove (18), make flow path structure (9) and dihedral pipe (10) integrally welded, and require that weld seam keeps sealing, high-pressure fluid in flow path structure (9) outwards can not be flowed out from commissure, the top of dihedral pipe (10) is connected with the bottom of ball-and-seat group, the top of flow path structure (9) is connected with the bottom of sleeve (1), sleeve (1) covers ball-and-seat group, ball-and-seat group is used for the current liquid upwards flowed from bottom, and for blocking the liquid from top, tubing round thread is arranged at the top of sleeve (1), the bottom of flow path structure (9) connects sand setting tail pipe, the bottom lock of sand setting tail pipe, the internal diameter of flow path structure (9) is greater than the external diameter 9-30mm of dihedral pipe (10), after making flow path structure (9) and dihedral pipe (10) integrally welded, the axis of dihedral pipe (10) and the axis disalignment of flow path structure (9), two axial lines is at a distance of 4-19m, make between flow path structure (9) and dihedral pipe (10), to form a thread form passage next month (11), a upper crescent passage (7) is formed between ball-and-seat group and sleeve (1).
2. sand-sink check valve bottom a kind of water injection string according to claim 1, it is characterized in that: ball-and-seat group comprises: tapered cap (2), unidirectional valve ball (3), one-way valve seat (5), valve bonnet (6), valve bonnet (6) there is tapered cap (2), valve bonnet (6) there is linked hole (4), make UNICOM inside and outside it, unidirectional valve ball (3) is put in the valve pocket of valve bonnet (6), one-way valve seat (5) is put under the valve pocket of valve bonnet (6), the upper surface of one-way valve seat (5) is adjacent to the inner circular bead face of valve bonnet (6), unidirectional valve ball (3) diameter is greater than the valve port diameter of one-way valve seat (5), unidirectional valve ball (3) drops to the upper rear contact surface of one-way valve seat (5) and keeps sealing, after valve bonnet (6) is threaded with dihedral pipe (10), the lower surface of one-way valve seat (5) is withstood in the upper surface of dihedral pipe (10), gap between the outside of one-way valve seat (5) and valve bonnet (6) keeps sealing.
3. sand-sink check valve bottom a kind of water injection string according to claim 1 and 2, it is characterized in that: sand setting tail pipe comprises box cupling (12), oil pipe (13), plug (14), the top of box cupling (12) is connected to the bottom of flow path structure (9), box cupling (12), oil pipe (13), plug (14) connect successively, oil pipe (13) is 1-9 root, plug (14) inside is blind hole, and plug (14) makes oil pipe (13) inside and external isolation.
4. sand-sink check valve bottom a kind of water injection string according to claim 3, it is characterized in that: the outer communication groove (18) of flow path structure (9) side is inner installs filter (19), (19) have filter bores with described filter, and the diameter of filter bores is: 2-9mm.
5. sand-sink check valve bottom a kind of water injection string according to claim 3, is characterized in that: sleeve (1) installs lower seal (8) with the junction of flow path structure (9), and sealing ring (15) is installed in the junction of ball-and-seat group and dihedral pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917681.8U CN205089284U (en) | 2015-11-17 | 2015-11-17 | Water injection string bottom sand setting single current valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917681.8U CN205089284U (en) | 2015-11-17 | 2015-11-17 | Water injection string bottom sand setting single current valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089284U true CN205089284U (en) | 2016-03-16 |
Family
ID=55479985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520917681.8U Expired - Fee Related CN205089284U (en) | 2015-11-17 | 2015-11-17 | Water injection string bottom sand setting single current valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089284U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437577A (en) * | 2016-10-17 | 2017-02-22 | 中国石油化工股份有限公司 | Inverse well flushing settlement switch |
| CN108999576A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Dispense sand prevention integrated tubing string and technique |
| CN113494252A (en) * | 2020-04-03 | 2021-10-12 | 中石化石油工程技术服务有限公司 | Reverse circulation sand cleaning and collecting device and use method thereof |
| CN113700454A (en) * | 2020-05-22 | 2021-11-26 | 中国石油化工股份有限公司 | New-type sand setting bottom screen is stifled |
-
2015
- 2015-11-17 CN CN201520917681.8U patent/CN205089284U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437577A (en) * | 2016-10-17 | 2017-02-22 | 中国石油化工股份有限公司 | Inverse well flushing settlement switch |
| CN106437577B (en) * | 2016-10-17 | 2023-11-14 | 中国石油化工股份有限公司 | Reverse flushing well sedimentation switch |
| CN108999576A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Dispense sand prevention integrated tubing string and technique |
| CN108999576B (en) * | 2017-06-06 | 2020-06-09 | 中国石油天然气股份有限公司 | Separate injection sand prevention integrated pipe column and process |
| CN113494252A (en) * | 2020-04-03 | 2021-10-12 | 中石化石油工程技术服务有限公司 | Reverse circulation sand cleaning and collecting device and use method thereof |
| CN113700454A (en) * | 2020-05-22 | 2021-11-26 | 中国石油化工股份有限公司 | New-type sand setting bottom screen is stifled |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205089284U (en) | Water injection string bottom sand setting single current valve | |
| CN105781488A (en) | Small-diameter constant-pressure throttling device for water injection well | |
| CN201187279Y (en) | Downhole differential pressure type normal open valve | |
| CN203081400U (en) | Double-seal flowback preventing check valve | |
| CN106368648A (en) | Intelligent fracturing wellhead device for shale gas exploitation | |
| CN204827256U (en) | Seal up and adopt down screen pipe and fill sand control integration operating tool string | |
| CN206830131U (en) | A kind of water injection well sand setting constant pressure check valve | |
| CN205297410U (en) | Well -flushing valve | |
| CN209385106U (en) | Pressure-guiding sand blower and double envelope single deck tape-recorder fracturing strings | |
| CN105696987A (en) | Water distributor for casing patching well | |
| CN107605430B (en) | A kind of well cementation anti-return self balancing device | |
| CN109281646A (en) | Small-well cracking tubing string and its application method | |
| CN105298443A (en) | Oil pipe float valve and blowout prevention, gas lift and fracture combined operation method for underbalance well completion oil pipe descending | |
| CN205000945U (en) | Intelligent shale atmospheric pressure splits wellhead assembly | |
| CN205089285U (en) | Prevent flowing backward control valve and layering and prevent flowing backward combination tubular column with adopting | |
| CN203867517U (en) | Well cementation slurry blocking device | |
| CN204024614U (en) | Counter-flow resisting bridge type eccentric injection mandrel | |
| CN104196505B (en) | Chemical flooding layering injection device | |
| CN206190247U (en) | Cleanout valve | |
| CN202946106U (en) | Grouting-free forcing type float collar | |
| CN206860986U (en) | Oil drilling oiling float valve | |
| CN204627445U (en) | The shunting connector of double layer continuous oil pipe | |
| CN203769690U (en) | Check valve for drilling tool | |
| CN205297501U (en) | Dirty water injection ball seat is arranged to general anti -overflow of high pressure | |
| CN206280023U (en) | A kind of anti-water burst device of tunnel core plugging notifying mechanism of rope core drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20171117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |